You should check out loose leaf teas. I find them to be less expensive and better quality. I like a mail order catalog called Upton tea imports. You can get 100g of earl grey for 7 bucks which is 18 cents a cup. They also have a cool quarterly magazine.

There are lots of other places to get loose leaf teas, like the grocery store in the bulk goods section. You can get little paper filters or get a strainer. I don't like the little clampy ball one, but it's cheap. I prefer the pour over basket.

I like Bigelow and Stash teas. You can buy Stash in bulk online and get like 100 bags at a time.

I buy Yorkshire tea from British Brands. It's $22 for 240 bags:

https://britishbrands.com/products/yorkshire-red-tea?variant=43991857529079

Butterfly brand fujian tea. $5 for a hundred teabags at the Asian supermarket.

What kind of tea? Hot tea? Iced tea? Either?

For iced tea, I can only really taste the sweetener so I'll buy the lowest of the lowest-priced whatever. Last time I was at Kroger, I bought the "Psssst" brand which is about as low as you can go. If I'm feeling fancy, I'll spring for Lipton's.

For hot tea, I've been drinking the English Breakfast style of Twinnings. Can't recall the price range, but I don't think it was expensive. With hot tea, the big boxes usually last me a while since I switch often (sometimes green tea, sometimes chamomile, etc)

I'll be interested to see the responses here. I once did research into the best teas, but there are so many brands, the info did not stick around in my head.

I don't have an answer for you, I pay way too much from a local tea shop, but you might get better suggestions with answers to the following

1. Hot or cold
2. what type(s), herbal, black, mate, loose, bag...
3. what do you like
4. what do you not like
5. flavor or plain

Wouldn't low end just be whatevers the cheapest?